Reading other fields from an interface extension

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Is there a way for the interface extension to read other fields of the item? I’d like one field to control some behaviours of another, e.g. collection could have a map and a drop-down limiting allowed shapes in the map.

I see that the component receives the collection name and item id, but, if I understand it correctly, I could only read the last saved value, and not the current one.

1 Answer

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You can use Vue’s provide/inject pattern to inject the form values:

import { inject } from 'vue';
const values = inject('values');

It’s definitely non-obvious, but I’ve used this a ton in my extensions. There’s also a way to emit updates to other fields from your interface extension.

I wanted to do the same but in a relational field (when it pops up side tab), do you think the same logic can work? cause I had to make the user save the changes first in the main item, then I fetch the data in the related item from the main to make my conditions.

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Hmm, I don't think you can get the parent form values directly from the relational form, but I may be wrong.

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I made an extension made it possible, but the extension just extract the ID from the main item and fetch the needed data. so I had to make the user actually saves the data which is not the best way.

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